const Koa = require('koa')
const app = new Koa()
// 跨域
const cors = require('koa2-cors')
// 验证token
const jwt = require('koa-jwt')

const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')

const index = require('./routes/index')
const users = require('./routes/users')
const ordering = require('./routes/ordering')

// 启动env
require('dotenv').config()

// 跨域
app.use(cors())

// error handler
onerror(app)

// token验证
app.use(function (ctx, next) {
  return next().catch((err) => {
    if (401 == err.status) {
      ctx.status = 401;
      ctx.body = 'Protected resource, use Authorization header to get access\n';
    } else {
      throw err;
    }
  });
});
app.use(jwt({ secret: process.env.addStack }).unless({ path: [/^\/public/, /^\/users\/login/] }));


// middlewares
app.use(bodyparser({
  enableTypes:['json', 'form', 'text']
}))
app.use(json())
app.use(logger())
app.use(require('koa-static')(__dirname + '/public'))

app.use(views(__dirname + '/views', {
  extension: 'pug'
}))

// logger
app.use(async (ctx, next) => {
  const start = new Date()
  await next()
  const ms = new Date() - start
  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})

// routes
app.use(index.routes(), index.allowedMethods())
app.use(users.routes(), users.allowedMethods())
app.use(ordering.routes(), ordering.allowedMethods())

// error-handling
app.on('error', (err, ctx) => {
  console.error('server error', err, ctx)
});

module.exports = app
